Knitted electric heating-body.



KNITTED APILIOATION FILED FEB. 1, 1910.

IPafienfied. 331w. 8, W16.

' MICHEL @F OF YORK, N. Y.

KNITTED ELECTRIC HEATING-BODY.

.tppiicetion filed February 1, 1910.

$peciflcation of Letters EPetent.

Patented Nov. 8, 119MB. Serial No. 541,400.

To of] "to/ions meg; concern:

Be it Town that l, MICHEL Herrera, a subject r the of Russia, residing at Petersburg, in the Empire of Russia, have invented certain new and useful Iniprovements in Knitted Electric Heating Bodies; and Z do hereby declare the follow ing to be e i ll, ciesr, and exact description tion, such as will enable others the art to which it appertsins to make and use the same.

My invention relates to improvements in electric heaters which can be put in the circuit oi" any electric house installation. From the apparatus of this kind hitherto known the heaters embodying the present invention differ in that they have the form of a network, of which the metal wires traversed by the electric current are inserted in an incoinbustible insuletin covering.

The accompanying drawing illustrates for example soire forms of carrying out the objclt of the present invention.

"Figure 1 shows it network of the simplest form; Fig. 9F- is an example of e. network made in two rows; Fig. 3-- is a longitudinal section of the insulating covering of c condoctor; 4lis c transverse section of u triple wie conductor; Figs. 5, 6, Tend 8 show various methods of connecting two rows or wi .es of the network.

in cs 3 out my improved electric heaters p y s wire 3 (Fig. 3) of metal, copper, nickel or the like, which is then surrounded with an ineombustible insulation, preferably with asbestos, and braided in the us l manner with cotton, silk or the Lin case of multiple wire, as for example t MFG conductor (Fig. 4:), each wire 8, 7 i with asbestos and then all the ther stranded or disposed by surrounded with a braid' g I 8, shown in the of diil'erent cross section. listed wire obtained in the described i make by means big-needles or s crochet s network, of w h i e ninple shown in Fig. 1. It-

ood, that the network can be executed in any desired other form, Whereby the finished gin-miner can he in the form of 5L htUHiliIPiflJlOi: of :2. strap, or any desired article. i he iiuul product can also be in the form of o. stocking, or glove, or hat, or. the like. liiorcovor, the product can be bi. .n will be under. 50

teinedjrom two wires, as shown in Fig. 2, where certain transverse portions of the fabric are represented as being formed by looping or knitting the wire A while other transverse sections thereof are formed by knitting the wire B, these sections alternating and being of short length, usually each of but two or three rows of loops. The er- .rcngement illustrated in ,Fig. 2 is however, merely illustrative of the invention and may be varied. It shows how", by using the circuit embracing the wire A, a certain portion or portions of the fabric may be heated, while by heating the wire B, a different portion or portions may be heated. Or, again, by making the longitudinal sections narrow when one or the other circuit only is used the fabric will be heated to a certain degree and when both are employed to a higherdegree. On connecting with the current supply one of the wires or the other, or both wires st the same time, or both wires in series,I can obtain different decrees otheating effeet, also" sheeting cl cot extending only to predetermined portions ofthe network. For instance the central portion can be heated up to it higher degree, than the surrounding parts or vice versa. On the other hand, in the case of a multiple-wire condu'c- 8"? tor or conductors, on connecting the wires thereof either separately or in groups i can obtain a iiery great number of combinations. Thus in s fabric in which are included two conductinl'g wires, whether these be united so into a compound cord such as illustrated in Fig. 4, or. entirely separate from each other re )rescnted in Fig, 2, there canbe obtaine iour tlifi'erent combinations as indiouted lo. Fig to 8, and these combinations es in turn will iin art to the fabric four difi'erent degrees of lient. I Fig 5 shows both the conductors a and b connected in series; in Fig. 6 only the conuctor a is connected to the current supply, 106 in Fig. 7- only the conductor 6, in Fig.8 both the conductors a and Z; are'connected in multiple. For three wires or three separate conductors l7 combinations ere obtain able, for 4 wires or conductors 51 combine. tions and so on. Thus, on choosing in suitable manner different wires and their co1nbinstions, a variation of the heating tempers. ture of 1 or 2 is obtainable. By the use of the netwo'rk products above described the danger of 11- excessive supcilicatinais clducting wires 3. '7, or 8, .represented in Big."

l, :1 iioivconductiixg thread orvlilzuncnt could be en'i )lo3'e(l.

What 1 china, and desire to secure by Letters Patent is:

1. An electric heater consisting of a fabric in which is incorporated filmnent adeoted to conduct electricity and to be lieoiteci by the passage of a current thereof, the said filmncnt being incorporated into successive transverse sections of the fabric sueh sec tions being separated by other traneve 'se sections of the fabric not filament, and the filmncnt being cziii'ied from one section into which it enters to the next along the edge of tile fabric where it is left exposed.

2. A11 electric heater consisting of ii fabric in which are incorporated. a plurality of filainents adopted to conduct electricity and. to be heated by the passage of" of, the dillcrnt filz'uncnts being incorp lfllifi il into :success'wc tr-msversc sections of the fabric, those including one filament be ing separated by the sections including the including the said 13. current thei'el l l l i l l l ,i l l l l l l l l l l l ceesive short transit-ewe other or others, and the comioetiiig like menisbeing carried to an edge the fabric; Wilelc they extend from one to the next and me there left exposed.

Bin ilm (1 heater consisting of E, l ted fabric in which are ineorooratetl par of the fabric o plurality of iii-solo 3d. eleeti'ic conductors the we conductors being independently knit into the fabric in sum eectioiis thezeo'li the said M'RIISI'QISE sections formed by one con ductoi being separated from each other e3: otter 'tiiinsvcrsee fabric not sections of the inclutliugthe siucl confluetor, and each cantltlCtOT being adopted to constitute part of R11 lilt itiplluitklt electric circuit and being carried from one transverse section 1' Yo winch 1t enters to the nez'iitm wh ch it enters along the edge oi: the fabric.

at. An electric heater consisting: of e. knit ted fabric into which is iucoipol'otetl as a part o'fthc fabric an insulated electric conductor, t. Snltl conductor being knitted into soc owe transverse sections oi the fabric, b'fililSBCtlOllS being separated by other knitted transverse sections not including the said conductor, and the conductor being UHF tied fi'om one section into which it chit, 5, the next Without being knitted into the h 1-- i'ic whereby it is left cxpoeclil so that :1 supply wire may be cue il connected therewith" in testimony whoa-cot E nlliz: in Sig-um tore, in presence of two witnesses.

llllitj-BEL Ht Bi ll itnecses:

Mommy LU iezmiaia 1m, M. A. Lovmomm. 

